Toothbrush head



FIG. 1 is a front elevation view of a toothbrush head showing my design, the dotted lines showing the environment of the toothbrush head, for which no claim is made;

FIG. 2 is a left side view thereof, the right side being a mirror image thereof;

FIG. 3 is an enlarged view of the toothbrush head shown in FIG. 1; and,

FIG. 4 is an enlarged view of the toothbrush head shown in FIG. 2. 

The ornamental design for toothbrush head, as shown and described. 